repentant

When he saw the broken window, the boy looked genuinely repentant.

用法提示：repentant 是形容词，在这里作表语，表示“后悔的”。

She wrote a repentant letter to apologize for forgetting her friend's birthday.

用法提示：repentant 是形容词作定语，修饰 letter，意为“悔过的、表示后悔的”。

After shouting at his mother, he felt repentant and asked for forgiveness.

用法提示：repentant 是形容词作表语，描述主语“感到后悔的”。